Lock for sliding doors



Oct. 9, 1956 G. R. TREPTOW v 2,766,057

LOOK FOR SLIOINO DOORS Filed July 22, 1953 4 Sheets-Sheet l Y SEO/e675 E TEEP TOW @CL 9, 1956 G. R. TREPTOW 2,766,057

LOCK FOR SLIDING DOORS Filed July 22, 1953 4 Sheets-Sheet 2 FF e@ www5/woe 650,965 E TEE/@Tow Oct. 9, l956 Filed July 22, 1953 G. R. TREPTOW n LOCK FOR SLIDING DOORS 4 Sheets-Sheet 5 Oct. 9, 1956 G. R. TREPTOW LOCK FOR SLIDING Door-es 4 Sheets-Sheet 4 Filed July 22, 1953 2,766,057 Patented Oct. `9, 1956 2,766,050 LOCK FOR SLIDING DOORS George R. Treptow, Chicago, lll., assignor to -The Youngstown Steel Door Company, Cleveland, hro, a corporation of Ohio Application July 22, 1953, Serial No. 369,677

12 Claims. (Cl. 292-148) This invention relates to more particularly to locks freight cars.

locks for sliding doors and for sliding doors of railway locking pins.

A further object is to provide locks of the character indicated in which the means for limiting vertical movement of the locking pins shall be rotatable.

A further object is to provide locks of the character indicated in which the means for limiting vertical movement of the locking pins shall be rotatable, and which shall include means for limiting rotation of the first mentioned means.

A further object is to provide locks of the character and automobile box A further object is to provide locks of the indicated whic shall permit brackets during as to secure full takeup of tapered locking pins carried by the lock brackets.

A further object is to indicated which shall also mclude separate supports cosecured in place.

Other objects of the invention will become clear as the description thereof proceeds.

In the `drawings forming part of this specification:

of an automobile box car.

Fig. 2 is a horizontal section taken on line 2 2 of Fig. 3 is a vertical section taken on line 3 3 of Fig. l. Fig. 4 is a horizontal section taken on line 4 4 of Fig. 5 is a horizontal section taken on line 5 5 of Fig. 6 is a horizontal-section taken on line 6 6 of elevation of the lower portion of a parts in position to permit the pin to be Fig. 7 is a side locking pin with moved upwardly.

ig. S is a view similar to Fig. 1 showing a lock embodying the instant invention applied to a box car.`

Fig. 9 is a horizontal section taken on line 9 9 of Fig. 8. Y

Fig. l0 is a view similar to Fig; 8 illustrating a modied form of loc Fig. 1l is a vertical section taken on line 11 '11 of Fig. 10.

Fig. 12 is a Fig. 10.

Fig. 13 is a Fig. 10.

Fig. 14 is a view similar to Fig. 7 of the lock shown in Fig. 10.

Referring first horizontal section taken on line 1.2 12 of horizontal section taken on line 13 13 of to the embodiment of the invention 'illustrated in Figs. 1 7 of the drawings the reference numeral 16 designates the lock bracket in its entirety.

and 12. The member 11 is preferably a pressing which is substantially channel-shaped in section. It embodies a web 13 and legs 14 and 15 which in the illustrated 20 of the channel-shaped poris secured in position as by thereof to the channel-shaped clearly in Fig. 2 of the drawpin 26 slidably retained upon the member l2 by means of the housing members 22 and 23 through which the locking pin slides. As shown in Fig. 3 of the drawings to provide a restricted opening 33 is correspondingly whlch extends through the opena seal-receiving opening 37 which in one position of the lug is adapted to be alined with a seal receiving slot 38 formed in the depending flange 24 of the lock bracket member 12. From Fig. of the drawings it will be seen that the chamber 31 is substantially elongated horizontally so that the lower portion of the locking pin and the member 30 which define the chamber 31 are adapted to be engaged by the elongated head 32 of the lug 33 in order to limit rotation of the lug to substantially 90.

A round rod 39 is welded to the inner face at the top of the outer Wall 40 of the upper housing member 22. While the round rod is preferred, it will be lapparent that the wall 40 can be cast with an inwardly projecting liange as shown in Fig. ll of the drawings. The locking pin 26 is assembled with the lock bracket member 12 after the rod 39 is welded to the upper housing member and prior to the assembly of the member 30 and the lug 33 with the locking pin. The rod 39 does not interfere with the noted assembly of the locking pin with the lock bracket member 12. After this assembly the member 30 and the lug 33 `are assembled with the locking pin by welding the member 30 to the lower portion of the pin. After such assembly it will be apparent that when the lug 33 is rotated so as to lie in vertical alinement with the locking pin 26 as shown in Fig. 7 of the drawings, the pin can be moved upwardly but cannot be disengaged from the member 12 because the depth of the lower portion of the pin and the member 3i) is greater than the distance from the rear wall of the member 12 to the rod 39.

In order to lock the main and auxiliary doors together when they are in closed position the locking pin 26 is adapted to engage a hasp 41 swingably carried by la hasp fastener 42 which is formed with a neck portion 43 adapted to extend through an eye 44 formed in the hasp. Forwardly of the eye 44 the hasp is formed with a housing section 4S. The hasp extension beyond the housing section 45 is indicated lat 46 and the extending portion is provided with a recess 47 adapted to be engaged by a lug 48 formed on lever 49 pivotally supported in a normally vertical position from the lower portion of the lock bracket member 12 as indicated at 50. To engage the hasp 41 the locking pin 26 extends through the housing section 45 so that the sloping portion 27 of the pin engages a correspondingly sloped side wall 51 of the box section of the hasp. By reason of the construction described and the indicated relationship between the locking pin and the hasp, separation between the main and auxiliary doors is prevented. In the event that these doors are not fully closed so as to be in abutment, as illustrated in Fig. 2 of the drawings, they can move toward each other. Such movement effects separation between the sloping portions 27 and 51 whereupon the locking pin drops by the action of gravity in order to restore this engagement. It is apparent, therefore, that back land forth movement of the doors 'and resultant wear on the parts of the lock are prevented.

When the locking pin and the hasp of the lock structure are engaged as shown in Fig. l of the drawings, a seal (not shown) extends through the locking pin and the flange 24 of the lock bracket member 12. To obtain this the lug 33 is rotated so that it lies substantially at a right angle to the rear wall 21 of the lock bracket member 12 and brings into alinement the opening 37 in the lug 33 and the Iseal slot 33 formed in the flange 24. Rotation of the lug for this purpose is limited by the engagement of the elongated head 32 with the member 30 secured to the lower portion of the locking pin. The rotation as indicated of the lug 33 in order to permit sealing of the doors disposes the lug beneath the lower housing member 23. As a result of this any forces upon the lock tending to cause the locking pin to jump upwardly will not bring about shearing of the seal since before this can occur the lug will engage the lower edge of the lower housing member 23 so as to prevent further upward movement of the locking pin.

When it is desired to unlock the two doorsV the seal is removed and the lug turned through approximately 90 so that it is in vertical alinement with the `locking pin. The latter can then be moved upwardly so as to be disengaged frorn the hasp 41 which can then be swung outwardly away from the lock bracket and downwardly so as to be supported by the hasp fastener.

By reason of the construction of the lock bracket the member 11 can be materially simpliiied and its cost greatly reduced. The member 12 o f the lock bracket can be standardized since any variations in construction of the auxiliary door can be absorbed by the relatively imple pressing which forms member 11. The castings therefor from which the member 12 of the lock bracket are formed can be identical regardless of the variations in the structure at the front edge of the auxiliary door.

The :construction of the lock bracket, moreover, permits simple adjustment of the member 12 relative to the member 11 so as to substantially simplify the securement of the lock bracket to the door while insuring initial full take-up of the lock. This is accomplished by hanging the member 12 from the web of member 11 by means of the hook 25 formed on the member 12. Locking engagement between the locking pin 26 and the hasp 41 is then obtained so as to insure full take-up of the lock by shifting the member 12 horizontally along the member 11. When the proper relationship between the locking pin and the hasp has been established the member 12 is welded to the member 11 and to the vertical reinforcing member 17 of the auxiliary door.

The provision of the rotatable sealingV lug 33 provides positive assurance against breakage of seals. Furthermore, the construction at the lower portion of the locking pin by means of which the lug 33 is rotatably carried by the pin simplifies the casting forming member 12 of the lock bracket and the assembly heretofore required with other types of lock brackets. Prior to applicants invention a lug was cast integral with the locking pin at the lower portion of the pin and an inwardly extending ange was cast integral with the upper edge of the outer wall of the upper housing member. With this construction it was necessary to cast this outer Wall in the form of an outwardly curved member in order to permit assembly of the locking pin with the lock bracket. After ysuch assembly it was necessary to hammer the curved wall inwardly 'so that the flange extending inwardly therefrom would be engaged by the xed lug to prevent disengagement of the locking pin from the housing member. However, inward hammering of the curved wall was sometimes overlooked so that loss of the locking pins occurred. This is prevented by the instant invention which also permits the wall 40 to be formed straight and which eliminates the need for hammering this wall as heretofore required.

The instant invention, however, is not limited to application to the double doors of automobile box cars. The invention is illustrated in Figs. 8 and 9 applied to Va box car which is equipped with single sliding doors. In this application the cast member 12 of the lock bracket is the same as that utilized in connection with the double doors of automobile box cars. The standardization of this member of the lock bracket therefore becomes apparent. However, Isince the box car carries a front stop member 52 adjacent to the forward edge of the door opening 53 which is adapted to limit closing movement of the door 19, the configuration of the member 11 of the lock bracket is modied. The door of the box car application is the same in construction as the main door of the automobile box car application.

The particular configuration of the member 54 of the lock bracket may be varied as desired. In the embodiment illustrated in Figs. 8 and 9 of the drawings athis member, which is a pressing, embodies an outwardly extending ange 55 secured as by means of Welding to lthe front stop member 52, a forwardly and outwardly sloping ange 56 Iand a rearwardly extending ange 57 which is secured as by means of welding to the front stop memthe locking pin heretofore described.

Another embodiment of the invention Q is illustrated .in Figs. 1 0 to 14 of the drawings.

In this embodiment engage lthe simithe lower portion of a cap member 68 secured as by means of welding to the cylindrical portion. The sleeve 67 is coped `as indicated at 69 in order to pro-vide shoulders 70 and 71. The projection 65 formed on the cylindrical portion 64 is seated within the 69 of the sleeve between the shoulders ing to the sleeve 67 in order to provide a finger grip for the purpose of rotating the `sleeve around the cylindrical portion.

In order to assemble the locking pin 52 with the lock bracket 58 the locking pin is inserted downwardly through the housing members 59 yand 60 before the sleeve 67 is secured upon the locking pin. After assembly of the locking pin with the lock bracket the sleeve 67 is then slid upon the cylindrical portion thereupon by the cap member 68 pin. The ear 72 is welded to the sleeve 67 before the assembly of the sleeve with the the pin.

The door 19 is shown in Fig. l of the drawings. the hasp 4l from in closed and locked position When it is desired to release the locking pin 62 in order to move the `seal (not shown) is first ing pin 62 'has been established the pin may be moved upwardly so as to be completely disengaged fnom the hasp 41. The door may then be opened.

In order to lock the door after it has been moved to closed position the hasp is positioned between the upper 4and lower housing members and the pin is moved downwardly through the box section 45 of the hasp to the position shown in Fig. l0 of the drawings. the sleeve 67 is rotated by means of the ear 72 approximately through an angle of 90 until the ear lies beneath the lower housing member 60. Rotation of the sleeve is limited by the engagement of the projection 65 with the shoulder 7l formed on the sleeve. When lthis has been done it will be found that the `slot 66 formed in the cylindrical portion 64, the slots 73 and 74 formed in the sleeve 67 and the-slot 75 formed in cast integrally with the lock bracket 58 will b a. flange 76 e in alinement so that a seal (not shown) may be threaded through the slots -in order to seal the door. It will be lapparent that in the considered embodiment of the invention as well as the embodiments illustrated in Figs. 1 to 9, inclusive, sealing of the door can be obtained only when thereof projecting directly under the ing members at an angle to said body portion ,to prevent movement of said pin through said latter housing mempin through said housing members.

2. ln a lock for sliding car doors, va lock bracket having verticaly spaced housing members and carrying a body portion, thereof projeoting direotly under ing members at an lug being provided wlth seal openings, being `alined when housing member, said seal openings being out of Ialinement when said lug is beneath said body portion of said pm.

3. In ya lock for sliding car doors, a lock bracket having vertically spaced housing members and carrying a tapered body portion, said lug in one position thereof projecting directly under the lower of said housing members at -an angle to said body portion to prevent movement of said pin through said latter housing member, said lug being rotatable horizontally to a position beneath said body portion to permit movement of said pin `through said housing members, `and means on said lug engageable with said pin for limiting rotation of `said lug between said positions.

4. In a lock for sliding car doors, a lock bracket having vertically spaced housing members and carrying a tapered locking pin slidable `through said housing members, said locking pin comprising a body portion having a chamber at the lower end thereof provided with a restricted opening `and a lug projecting below said body portion, said lug having a head seated in said chamber and rotatably in a horizontal plane therein, `a restricted neck lying `in said chamber opening and a body portion adapted to project directly under the lower of said housing members, said lug being rotatable horizontally to position said body portion of said Ilug beneath the body portion of `said pin to permit movement of said pin through said housing member.

5. In a lock for sliding car doors, a lock bracket having vertically spaced housing members and carrying a tapered locking pin slidable -through said housing niemberS, said locking pin comprising a body portion having a chamber at the lower end thereof provided with a restricted opening and a lug projecting below said body portion, said lug having a head seated in said chamber and rotatably in a horizontal plane therein, a restricted neck lying in said chamber opening and a body portion adapted in one position thereof to project directly under the lower of said housing members, said lug being rotatable horizontally to position said body portion of said lug beneath Athe body portion of said pin to permit movement of said pin 4through said housing member, said head of said lug having means engageable with said chamber for limiting rotation of said lug between said positions.

6. In a lock for sli-ding car doors, a lock bracket having vertically spaced housing members and carrying a tapered locking pin slidable through said housing members, said locking pin comprising `a body portion having a chamber at the lower end thereof provided with a restricted opening and a lug projecting below said body portion, said lug having a head seated in said chamber and rotatably in a horizontal plane therein, a restricted neck lying in said chamber opening and a body por-tion adapted in one position thereof to project directly under the lower of said housing members, said lug being rotatable horizontally to position said body portion of said lug beneath the body portion of said pin to permit movement of said pin through said housing member, said head of said lug having means engageable with said chamber for limiting rotation of said lug between said positions, said body portion of said lug and said lock bracket having seal openings said seal openings being alined when said body portion of said lug projects under said lower housing member, said seal openings being out of alinement when said lug is beneath said body portion of said pin.

7. ln a lock for sliding car doors, a lock bracket having vertically spaced housing members and carrying a Vtapered locking pin slidable through said housing members, said locking pin comprising `a body portion, said body portion having a cylindrical portion at the lower end thereof, a lug mounted for rot-ation in a horizontal plane on said cylindrical portion, said lug being adapted in one position thereof 'to project beneath the lower of said housing members, said lug vbeing rotatable horizontally to a position beneath said body portion to permit movement of said pin through said housing members, and means for retaining sai-dilug upon said cylindrical portion.

8. Ina lock for sliding car doors, a lock bracket having vertically spaced housing members land carrying a tapered locking pin slidable lthrough said housing members, said locking pin comprising a body portion, said body portion having a cylindrical portion `at the lower end thereof, a lug mounted for rotation in a horizontal plane on said cylindrical portion, said lug being adapted in one position thereof to project beneath the lower of said housing members, said lug being rotatable horizontally to fa position beneath said body portion to permit movement of said pin through said housing members, means for retaining said lug upon said cylindrical portion, `and cooperating means on `said pin and said lug for limiting rotation of said lug between said positions.

9. ln a lock for sliding car doors, a lock bracket having vertically spaced housing members and carrying a tapered locking pin slidable through said housing members, said locking pin comprising a body portion, said body portion having a cylindrical portion at the lower end thereof, a

lug mounted for rotation in a horizontal plane on said cylindrical portion, said lug being adapted in one position thereof to project beneath fthe lower of said housing members, vsaid lug being rotatable horizontally to a position beneath said body portion `to permit movement of said pin through said housing members, aand means for retaining said lug upon said cylindrical portion, said lock bracket, cylindrical portion of said pin and lug being provided with seal openings, said seal openings being alined when said lug projects beneath said lower housing member said seal opening in said lug being out of alinement with said seal openings in said cylindrical portion and said lock bracket when said lug is beneath said body portion of said pin.

l0. lan a. lock for sliding doors of railway cars, a lock bracket comprising a base member and a separate body member provided with vertically spaced housing members and carrying a locking pin slidable through said housing members, said base member being secured to a car prior to the securement of said body member, said body member being subsequently secured to said base member, the construction of said base member being modified as required by the construction of the car to permit securement thereto, said base member always embodying a flange extending at an `angle and being secured to said car and a ilange spaced horizontally from said car, said body member being of the same construction regardless of the construction of the base member and being capable of securement to the latter liange of all embodiments of said base member. Y

ll. In a lock for sliding doors tof railway cars, a lock bracket comprising a base member and `a separate body member provided with vertically spaced housing members and carrying a tapered locking pin slidable through said housing members, said body member having a hook engageable with said base `member to support said body member upon said base member for horizontal movement relative thereto, said base member being secured to a car prior to the securement of said body member, said body member being subsequently secured to said base member, and said base member being modified as required by the construction of the car to permit securement thereto, said base member lalways embodying a flange extending at an angle and being secured -to said car and a iiange spaced horizontally from said car, said body member being of the same construction regardless of the consrtuction ofthe base member and being capable of securement to the latter flange of all embodiments of said base member.

12. In a box car having a sliding door and a front stop for limiting closing movement of the door, ka base member welded to said car adjacent -to said front stop, and a separate body member comprising vertically spaced housing members and carrying a locking pin slidable through said housing members, said body member being provided with a hook engageable with said base member -to support said body member upon said base member for horizontal movement relative thereto, and means securing said body member to said base member after said base member has E been welded to said car.

References Cited in the tile of this patent UNITED STATES PATENTS 

